CVE-2025-49379 identifies an Incorrect Privilege Assignment vulnerability in the silverplugins217 Custom Fields Account Registration For Woocommerce plugin, specifically affecting versions up to 1.2. This plugin extends WooCommerce by allowing custom fields during account registration, but due to improper privilege management, it allows attackers to escalate their privileges beyond intended limits. Privilege escalation vulnerabilities are critical because they can enable attackers with limited access to gain administrative or otherwise unauthorized control over the system. The flaw likely arises from improper validation or assignment of user roles or capabilities during the registration or account management process. Although no CVSS score has been assigned, the vulnerability's nature suggests it affects confidentiality and integrity by potentially exposing or modifying sensitive user or administrative data. No known exploits have been reported yet, but the vulnerability is publicly disclosed and published as of December 18, 2025. The absence of a patch link indicates that a fix may not yet be available, increasing the urgency for affected organizations to monitor vendor updates or implement compensating controls. WooCommerce is widely used in e-commerce, and plugins like this one are common for customizing user registration workflows, making this vulnerability relevant to many online retailers. Attackers exploiting this flaw could manipulate user roles, gain administrative access, or bypass security controls, leading to data breaches, fraudulent transactions, or site defacement.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on WooCommerce for their e-commerce platforms. Privilege escalation can lead to unauthorized access to customer data, including personal and payment information, violating GDPR and other data protection regulations. This can result in legal penalties, reputational damage, and financial losses. Additionally, attackers gaining administrative access could disrupt business operations by modifying product listings, prices, or order processing, leading to revenue loss and customer trust erosion. The e-commerce sector in Europe is substantial, and many SMEs and large retailers use WooCommerce due to its flexibility and cost-effectiveness. The vulnerability could also facilitate further attacks, such as malware deployment or ransomware, by leveraging escalated privileges. Given the lack of known exploits currently, the immediate risk is moderate, but the potential for rapid exploitation once a public exploit appears is high. Organizations failing to address this vulnerability promptly may face increased risk of targeted attacks, especially in countries with high e-commerce activity and cybercrime prevalence.

1. Monitor the silverplugins217 vendor and Patchstack advisories closely for an official patch or update addressing CVE-2025-49379 and apply it immediately upon release. 2. Until a patch is available, restrict access to the WordPress admin panel and WooCommerce settings to trusted personnel only, minimizing the risk of privilege escalation exploitation. 3. Implement strict role and capability audits within WordPress to ensure no users have excessive privileges beyond their operational needs. 4. Use Web Application Firewalls (WAF) with custom rules to detect and block suspicious requests targeting the account registration endpoints. 5. Conduct regular security assessments and penetration testing focusing on user registration and privilege management workflows. 6. Educate administrators and developers about the risks of privilege escalation and the importance of least privilege principles. 7. Consider disabling or replacing the vulnerable plugin with alternative solutions that have a proven security track record if immediate patching is not feasible. 8. Maintain comprehensive logging and monitoring to detect unusual privilege changes or account activities promptly. 9. Backup site data regularly and verify restoration procedures to minimize downtime in case of compromise.